Function str_at

src/command/argument_parser.cpp:53–56

constexpr std::string_view str_at(unsigned offset) {
    auto ref = OptionStrTable[llvm::StringTable::Offset(offset)];
    return {ref.data(), ref.size()};
}

/// Plain enum: Options.inc combines these with bitwise-or, which needs the
/// implicit conversion an enum class forbids.
enum ClangDriverFlag : unsigned {